Automatic valve



Dec. 8, 1931. 1 A, DW SON 1,835,027

AUTOMATIC VALVE Filed Aug. 25, 1930 2 Sheets-Sheet l FIG. 2.

I N VEN TOR. LOUISA. EDW/YYSO/Y A TTORNE Y.

BY QQ/W.

Patented Dec. 8, 1931 "UNY-ITEDFF STATES PATENT OFFICE LOUIS A. EDWINSON, F TOPEKA, KANSAS, ASSIGNOR OF ONE-HALF T0 EUGENE A. SNYDER, OF GREAT FALLS, MONTANA AUTOMATIC VALVE Application filed August 25, 1930. I Serial No. 477,704.

Myinvention relates to improvements in automatic valves.

Theobject of my invention is to provide an electrically operated valve that is arranged to close at a certain fluid level.

A still further object of my invention is to provide an electric trip, governed by a float, to close a valve at a certain level of fluid in a container.

A still further object of my invention is to provide a valve of the kind described for use in filling oil drums, the valve having an electric trip arranged to close the valve at a certain fluid level in the drum.

A still further object of my invention is to provide a valve of the kind described having a trip mechanism comprising an armature mounted on the valve stem and rotated to close the valve by means of electromagnets 2o momentarily energized through the action of a float closing a switch.

These and other objects will hereinafter be more fully explained.

Referring to the drawings in which like characters apply to like parts in the different views:

Fig. 1 is an elevation of the valve with parts removed and parts shown in section for the purpose of illustration.

. Fig. 2 is a plan viewof the valve with the .40 the latter shownfragmentary and in section.

' Fig. 6 is a wiring diagram showing the electrical connections of the switch and magnets.

Fig. 7 is an enlarged perspective view of '45; the cam members.

A valve mechanism comprising an upper housing 1 with cover 1,, a valve chamber 2, hose connection 3, and spout 4, is arranged for insertion into the opening of an oil drum as at A in Fig; 5. v I

The hollow valve stem 5 passes through the guidefi from the upper housing 1 into the chamber 2. The valve 7 positioned on the lower end of the said stem, seats at 7 in the valve chamber to close the opening into the nozzle 3. A cylindrical armature 8 having an indicating handle 9 integral there: with, is firmly affixed to the upper etxremity of the valvestem 6. When the armature 8 restson the cam member 10 at the points B as indicated in Figs. 1, 2 and 3 thevalve is held open against the force of the spring 11, which is compressed between the valve and upper part of the chamber 2.

lVhen the armature is rotated slightly in the direction of the arrow in Fig. 2, the force of the spring 11 carries the armature down the inclined parts of the cam 10 as indicated at C until the valve 7 rests on the seat 7 and closes the opening into the nozzle. 7

As a means to rotate the armature 8 to close the valve after a certain lever of fluid is reached, I have provided in this instance two electromagnets 12 and 13 mounted in the housing 1 as shown. These magnets are-energized from a source of electric power by a circuit which is compieted by the closing of the switch 14. The switch comprisesv a closed hollow body having within andundera bath of oil, two contact points 15 and 16 and a V-shaped member 17. The latter is fastened at the end-of a rod 18 which is slidably positioned' through the packing 19 at the top of the switch body. When the member 18 makes contact with the points 15 and 16the electromagnets 12 and'l3 are energized. Whenthis occurs the armature being initially in the position indicated in Figs. 1, 2 and 3 attempts to align itself with the direction of the magnetic field between the'electi'omagnets and is rotated, from the flat portions at B on the cam 10110 the inclined portions at G and is thence forced downward by the spring to the position illustrated in Fig. 3 closing the valve. 5 In order to obtain this action the switch is closed momentarily by the following means: A lever 20 is pivot-allyconnected at one end to the rod 18 and trunnioned at an intermediate point on the switch body as at D. At its other end the lever is pivotally connected to the-float stem 21 which extends downward Louis A. EDWITNSON.

through the hollow valve stem 6 to suppor the float 22. Thelatter is suspended in the manner shown in Fig. 1. A stopmember 21 at the top of the valve stem and 21" betionto support the float when the valve is in the open position and to open the switch after contact whenjthe valve'drops into the closed Position. f a: i

When theffluid level asjat Efin Fig. '1

the floatrod to close the switch. "Ihis ener; gizesthe coils of the electromagnet to rotate the armature to close the valve", which action opens the switch.- T v The necessary current isc'onducted into the housingby thecord 24 or any'suitable means. Tojopen the valve after a tripping action the indicating handle 9 is partially rotated in an anti-clockwise directiom-with respect to.Fig'.2 until the armature 8 is raised by the inclined portions of the cam 10 to finally rest at "3 against the ,stopslOi 7 In operation the valve is connected to a h0se'25 which serves the former from a supply of oil. The valveis closed and the nozzle is placed 'in the bung or opening of an oil drum. The cord is connected tola source of current and the valve isopened. The oil then flows through the hose into the valve chamber and lthence'into the container. When .the oil reaches .a certainlevel in the drum the float float cylinder 23 which is integral the it valve 7 and extends into the nozzle in the low the valve stem on the float ste1n21funcreaches the float buoyancy of theffloat lii 'ts in turn carries thefloat stein downward and isflifted and the'valveautomatically closes i as heretofore d'escribedi where the duties of anattendant-"demand his This de "'ce' 'is, very convenient for use attention at'n'umerousfilling-points and prei trio current near inflammable liquidsand as 1 the circuit'is energized momentarily 'the 'heat-r in'gjotthe coils is negligible under e; j j g 5 f J j design." Y. Y Such modificationsm'aybe used as lie with}. in 'the:scope;o-f the vappendedclaim .and lwhat I claimasne-wand desire to secure byLetters Enteritis; w r

".In an .automaticfluid valve; .a poppet type I" e I 4 a valve having a hollow stem, an armature com- 

